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Diodes Incorporated ZXTN2018FQTA
- Part No.:
- ZXTN2018FQTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZXTN2018FQTA.pdf
- Description:
- TRANS NPN 60V 5A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,630
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Product details
Overview
ZXTN2018FQTA from Diodes Incorporated is a 60V, 5A NPN medium-power bipolar junction transistor (BJT) in SOT23 (Type DN) package, optimized for automotive-grade switching in gate-driving, motor control, and solenoid drive circuits. It delivers VCE(sat) ≤ 45 mV at 1 A, RCE(sat) = 25 mΩ, and 140 V forward blocking voltage, with AEC-Q101 qualification and IATF 16949 manufacturing.
For engineers reviewing the ZXTN2018FQTA datasheet, ZXTN2018FQTA pinout, ZXTN2018FQTA application, or ZXTN2018FQTA equivalent, key selection criteria include its low saturation voltage at high current, 140 V BVCEO/BVCEV rating, thermal performance on 25 mm² copper, and AEC-Q101 compliance for under-hood automotive use.
Technical Context
This NPN BJT operates as a high-current, low-VCE(sat) switch in linear and pulse-driven configurations. Its hFE ranges from 15–220 depending on collector current (15 @ 5 A, 220 @ 10 mA), supporting both precision biasing and robust power switching.
The device features dual breakdown ratings-140 V BVCEV (with reverse-biased base) and 60 V BVCEO (open-base)-enabling safe operation in inductive load snubbing and flyback protection. Thermal resistance RθJA is 80 °C/W when mounted on 25 mm × 25 mm 2 oz copper, enabling 1.56 W continuous dissipation at TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - Maximum safe collector-emitter voltage with open base; defines primary DC blocking capability. |
| IC (cont.) | 5 A - Continuous collector current rating; supports high-side/low-side switching of motors, relays, and lamps. |
| VCE(sat) | ≤ 45 mV @ 1 A - Enables <100 mW conduction loss at 1 A, critical for thermally constrained automotive PCBs. |
| RCE(sat) | 25 mΩ - Directly calculable on-resistance equivalent; simplifies power loss modeling in pulsed applications. |
| BVCEV | 140 V - Higher blocking voltage with base biased negatively; essential for inductive kick suppression in gate drivers. |
| hFE | 40–220 - Wide DC current gain range across operating points; allows flexible base drive design from logic-level to dedicated driver ICs. |
| TJ Range | −55 to +150 °C - Full automotive temperature range support; validated for under-hood environments. |
Pinout & Package
Package: SOT23 (Type DN), molded green plastic, matte tin-plated leads, 0.008 g mass, JEDEC-compliant footprint with 125 °C/W (min copper), 80 °C/W (25 mm² copper) thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current output path | Connected to load high-side or low-side; rated for 140 V blocking and 5 A continuous conduction. |
| Emitter (E) | Current return path / reference node | Serves as common return for load current; tied to ground or supply rail depending on topology. |
| Base (B) | Control input for transistor turn-on/off | Receives current-limited drive (max 1 A); requires ≥0.85 V VBE(on) to activate; enables fast switching (ton = 33 ns). |
Key Features
| Feature | Design Value |
|---|---|
| Low saturation voltage | VCE(sat) ≤ 45 mV @ 1 A reduces conduction loss and self-heating in high-duty-cycle drives. |
| High peak current capability | ICM = 12 A supports short-duration surge loads like relay coil energization or motor startup. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD (HBM 4 kV), ensuring reliability in safety-critical systems. |
| Green, lead-free construction | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); compliant with RoHS 3 and IATF 16949 manufacturing. |
| Thermal derating flexibility | Linear derating from 1.56 W @ 25 °C to zero at 150 °C enables predictable power budgeting in compact layouts. |
Applications
| Motor Drive Control | MOSFET/IGBT Gate Driving |
|---|---|
Use Scenario: Driving brushed DC motors in automotive HVAC blower or seat adjustment modules. IC Role / Device Role / Timing Role: High-current NPN switch controlling motor power path via PWM or on/off logic signals. Use Value: Low VCE(sat) minimizes heat generation during continuous 3–5 A operation; 140 V BVCEV clamps inductive spikes safely. | Use Scenario: Active pull-down stage in half-bridge gate driver circuits for automotive traction inverters. IC Role / Device Role / Timing Role: Fast-turn-off switch discharging gate capacitance of high-voltage MOSFETs/IGBTs. Use Value: toff = 668 ns ensures rapid gate discharge; 12 A ICM handles transient gate charge currents without saturation. |
| Relay & Solenoid Actuation | Automotive Lighting Control |
Use Scenario: Switching 12 V/24 V automotive relays and fuel injector solenoids. IC Role / Device Role / Timing Role: Medium-power discrete switch interfacing microcontroller GPIO to inductive loads. Use Value: 60 V VCEO withstands back-EMF up to 140 V; RCE(sat) = 25 mΩ limits voltage drop across switch during activation. | Use Scenario: Dimmable LED headlamp or DRL current regulation in body control modules. IC Role / Device Role / Timing Role: Linear or PWM-controlled current sink for constant-current LED strings. Use Value: Stable hFE over −55 to +150 °C enables accurate analog current setting; low VCE(sat) preserves forward voltage margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTP2027FQ | Complementary PNP device; same package, 60 V VECO, 5 A IC, VEC(sat) ≤ 45 mV @ 1 A | Used in complementary emitter-follower or push-pull output stages, not direct replacement | Select only when building matched NPN/PNP pairs for symmetrical drive or level-shifting topologies. |
| MMBT4401LT1G | Lower voltage (40 V VCEO), lower current (600 mA IC), higher VCE(sat) (750 mV @ 150 mA), no AEC-Q101 qualification | Targeted at consumer/commercial signal switching, not automotive power switching | Not suitable for automotive or high-current applications; consider only for non-safety, low-power prototyping. |
Compared with ZXTP2027FQ (complementary PNP) and MMBT4401LT1G (commercial-grade signal transistor), ZXTN2018FQTA provides uniquely high current, low saturation, and automotive qualification-making it irreplaceable in AEC-Q101–mandated 5 A switching roles where reliability and thermal margin are critical.
Availability
ZXTN2018FQTA is available at Aetrix Electronics and suitable for automotive motor drives, gate driver circuits, and solenoid actuation requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for ZXTN2018FQTA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
ZXTN2018FQTA belongs to Diodes' ZXT series of AEC-Q101–qualified medium-power transistors, engineered specifically for robust switching in automotive subsystems such as body electronics, powertrain interfaces, and ADAS sensor drivers.
FAQ
What is the maximum allowable base current for ZXTN2018FQTA?
The absolute maximum base current is 1 A, per the Absolute Maximum Ratings table. However, typical operation uses IB = 50–250 mA to achieve IC = 1–5 A with hFE = 20–200. Exceeding 1 A risks permanent damage to the base-emitter junction, especially under sustained DC conditions.
Can ZXTN2018FQTA replace a MOSFET in gate-driving applications?
Yes-it is explicitly recommended for MOSFET/IGBT gate driving due to its low VCE(sat), high peak current (12 A), and fast toff (668 ns). Unlike MOSFETs, it requires base current drive but offers superior ruggedness against voltage transients and simpler level-shifting than high-side N-channel solutions.
Is ZXTN2018FQTA suitable for linear (analog) operation?
It supports linear operation within its Safe Operating Area (SOA), particularly at low VCE and moderate IC. However, its primary design focus is switching; for precision analog amplification, devices with tighter hFE tolerance and lower noise (e.g., BC847 variants) are preferred.
Does ZXTN2018FQTA require a heatsink in standard SOT23 mounting?
No external heatsink is required when operated within its SOA and derated power limits. At 1.56 W dissipation on 25 mm × 25 mm 2 oz copper, junction temperature stays below 150 °C. For >1 W continuous use, ensure adequate PCB copper area and airflow per the thermal derating curves in DS41628.
ZXTN2018FQTA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 5 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 210mV @ 300mA, 6A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 2A, 1V
- Power - Max:
- 1 W
- Frequency - Transition:
- 130MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ZXTN2018FQTA FAQ
1.How can I place an order for ZXTN2018FQTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTN2018FQTA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ZXTN2018FQTA reliable?
The price and inventory of ZXTN2018FQTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTN2018FQTA is usually 5 days.
3.What payment methods are accepted for ZXTN2018FQTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTN2018FQTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTN2018FQTA?
ZXTN2018FQTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTN2018FQTA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ZXTN2018FQTA?
For technical support, including ZXTN2018FQTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTN2018FQTA requirements.
6.How does Aetrix verify that ZXTN2018FQTA is sourced from the original manufacturer or authorized distributors?
All ZXTN2018FQTA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ZXTN2018FQTA meets industry standards.
7.What is the process for return or replacement of ZXTN2018FQTA?
All ZXTN2018FQTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTN2018FQTA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ZXTN2018FQTA part is unused and in its original packaging.
Return procedure for ZXTN2018FQTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZXTN2018FQTA Tags
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